Switch-lock.



J. ATKINS.

SWITCH LOCK.

APPLICATION HLED juuszl. 1916.

Patented July 10, 1917.

JAMES ATKINS, F PHILADELPHIA PENNSYLVANIA.

' 1 onion.

SWITCH-LOCK. I

To all whom'it may concern:

Be it known that I, JAMES ATKINS, a

subject of the King of Great Britain, re-.

. for use on automobiles, since it will prevent i any one other than a person who is authorpractically inoperative to any one who does ized to do so, from running or stealing the fcar..

' One object of my invention is to provide a combination switch lock which may only be closed after the proper combination has been secured or set. Another object is to so construct a switch lock of the above described type that it can be quickly and easily operated by a person who knoWs the propercombination, but is not know the combination.

A further objectfis to so make my inven-' tion that it will be effective, durable, and can be manufactured at a reasonably low cost.

Another object of, my invention is to so construct my improved switch lock that the combination may be quickly changed. I

These objects, and other advantageous ends'which will be described hereinafter, I attain in the following manner, reference beinglhad to the accompanying drawings in vwhic Figure 1 is a tion.

top plan view of my inven- Fig. 2 is a sectional elevation taken on the line a-a of Fig. 1.

Figs. 3, 4, a'nd 5, are transverse sections aken respectively on the lines b-J), cc,

nd d d of Fig. 2;

A main casing 1, consists of two cupshaped ends 2 and 3, and two intermediate cylindrical sections 4; and 5. These intermediate sections .4 and 5 are spaced from each other, and from the end sections 2 and I 3 to provide room forfrotatable rings 6, 7,

and 8, which have disks 9, 10, and 11 secured thereto by means of pin-and-hole con- 'nection.

Each of the disks'9, 10, and 11 have holes 12 spaced in annular formation adjacent their peripheries, and into these holes project pins 13 which, as illustrated, are ar- Specification of Letters Patent. Patented July 191?. Application filed June 21 1916. S eria1No. 104,873.

rangeddiametricall'y opposite on inwardly pro ecting flanges 14: on ;each of the rings 6, 7, and 8.

From this construction it will be understood that a rotation of any of the rings 6, 7, and 8, will effect a corresponding rotation to its respective disk. Each disk has a ra dially extending slot 15 and a hole 16.

A central longitudinally extending tube 17 is secured to the end section 3 by means of a spider 18. This tube is slotted throughout a portion of its length as at 19, and

extends through the holes 16in the disks 9, 10, and 11'. r i

A plunger 20 is designed to slide longitudinally within the tube 17 and has'thre'e pins 21 which are in line and under certain conditions are designed'to respectively pass through the slots 15 of said disks when the said slots 15 are all brought into-aline- The inner end 23 of the plunger 20 is recessed at24c, and is designed to engage and form 'an electric connection between two contacting fingers 25 and 26. These contacting fingers are spaced apart, and form elements which complete an electric cir i cuit, as for example, to the engine or other movable part of the automobile.

tricity. H i

It will thus be understoodv that when the parts are in theposition shown in Fig. 2, the contacting fingers 25 and 26 being spaced The plunger 20 is c preferably made of metal which is a good conductor of -elec-' apart, will not provide a circuit for the a and 26 to complete the circuit.

The section 2has an'inwardly projecting sleeve 27 which is screw-threaded at 28. to receive the threaded end of the tube 17, and is also provided with a transversely extending slot 29 into which the adjacent pin 21 projects when the plunger is in the position shown in Fig. 2, so that when the plunger is Lin this position, said latter pin will act as a stop to prevent the section 2 from being members 25 and26 areginsulated from the section 3 by meansyof insulation as shown unscrewed or removed, However, if the plunger is pushed as above described, said J pin will pass 'out of the slot 29 and if de sired, the section 2 may .then be unscrewed from the tube'and the several parts may be when all of the zero'marks are in line with the edge as of'the plate 30. However, this combination may be changed by, separating the disks from their respective rings and changing the relation between the pins and the holes, Z

In order tolock the plunger in the pos1-' tion-shown in Fig. 2, which is the inoperative position, it is merely necessary to turn one or more of the rings 6, 7, and 8, and

" unless a personis familiar with the combination, it is practically impossible to secure the proper combination.

l I have illustrated three pins 21, andthree I 30 rings and disks, however, it willbe understood that any number ofrings, disks, and

pins may be employed, the greater the numher the more diflicult itfwill be to secure the prop'er'combination by any person who 7 does not knowsaid combination. v

' 'nvention may be conveniently placed' within the daslnboard or foot board of an automobile,,1in which case the plate 30'.may

be secured to said; dash board, and the sec-- 40 tion 3 may be inserted within said dash board, only the rings 6, 7, and 8,. the end section 2, and han'dle ofthe plunger being exposed. t

.The handle 31 of the plunger is screwed or otherwise detachably secured to the end thereof, and if-it is, desired to take the elements. apart, this handle may be'first re-., moved after which the end 2 screwed as hereinbefoie-stated,

It will be understood that the contacting at 32, however, this section-may, if desired,

be made of an insulating, material in which, i caseit will be unnecessary to furnish fun ther insulation. a

v stood that the various parts of myinvention 460 may; be changed-without departing from'the spirit thereof, and hence I do not limit myself to the preciseconstruction set forth, but "consider that I am at liberty tomake such changes and alterations'as fairly; come with- 5 in the scopeof-the appended'claims; a i

within-said support, selective rings having portions outside of said casing, disks within said casing and ha'ving'slots therein, pins on said member, means for detachably connecting said disks to the rings-,said disks being moved by-said rings to movetheir slots into and. out of alinement with said pins, said member being movable within said casing when the slots and pins are in alinement, means outside of said casing for" determining the relative position between the slots and the pins, said casing. having a removable cup-shaped end section screwed- .directly on, said support, sai end section havinga' portion projecting within the cas ing and provided with a slot extending from its innermost edge toward the, end of and being formed entirely within said latter sec- 3 tion, one of said spins being movable'into engagement with said slot when the member is moved into a pre-determined outward position to thereby lock the end section to the support, substantially as described.

2. The combination of a casing, a support I within said casing, a member slidable within said support, selective rings having portions outside 'of said casing, disks within said casing and having slots therein, pins on said member, means for" detachably' con-, necting said disks to the rings, said disks fbeing moved by said rings to' move their slots into and out of al'inemen-t with saidpins, said member being. movable within said casing. when the slots and pins are in alinement, means outside of said casing for the slots and the pins, said casing having a' removable end section screwed on said support, said end section having a sleeve proecting entirely. 'withinthe casing and] through whlch said first member slides, said sleeve havinga slot extendingfrom its in-. I

located outside of said cylindrical sections and bridging the-"space therebetween and between the cylindrical sections'a'nd the end 12'5 jecting flanges, 'disks'detachably connected sections, said rings having inwardlyproner' end longit udinallyof said sleeve, one of said pms bung-movable into engagement 4 v cylindrical sections, rings having portions Wh ile Ihavexdescribed my invention as :taking'a particular form, it will be under-Y to and held between said inwardly projectmg flanges and'one of said end sections, said disks having centrally extending holes and i L radially'extending slots, a tubular support 105 determinir'lg the relative position between fixed within said casing and having a longitudinally extending slot, a plunger slidable within said tubularsuppor't, pins on said plunger extending through said slot in the support, said disks being moved by7saidrings to move their slots into and out of alinement with said pins, said-member being movable within said casing, when the slots and pins are in alinement, means outside of said casing for determining the relative position between the slots and the pins, means for posltively connecting said tubular support to one end section, means for detachably connecting said tubular support to the opposite end section, and means for locking said latter section to the support when the plunger is in a pre-determined ppsition,substantiallv as described.

,4. The combination of a casing having cup-shaped end sections and intermediate cylindrical sections, rings. having portions located outside of said cylindrical sections and bridging the space therebetween and between the cylindrical sections and the end sections, said rings having inwardly projecting flanges, disks detachably connected to and held between said inwardly projecting flanges and one of sai disks having pentrally extending. holes and radially extending slots, atubular support d end sections, said fixed within said casing and having a longitudinally extending slot, a plunger slidable within said tubular support, pins on said plunger extending. through said slot in the support, said disks being moved by said rings to move their slots into and out of alinement with said pins, said -member being movable within said casing when the slots and pins are 1n alinement', means outside of said caslng for determining the rela tive position'between the slotsand the pins,

means for positively connecting said tubular support to one end section, said tubular threaded end, the other of support having a said end sections havlngian lnwardly. projecting internally threaded sleeve designed to fit-the threaded end of the support, said. sleeve having a slot at its inner end, one of said pins being movableinto engagement with said latter slot when the plunger is slid into a pre-determined outward posiv tion to thereby lock said latter endsection' 

